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<div class="header">
  <div class="summary">
<a href="#nested-classes">Classes</a> &#124;
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  <div class="headertitle">
<div class="title">Interface<div class="ingroups"><a class="el" href="../../da/d9b/group__features2d.html">2D Features Framework</a> &raquo; <a class="el" href="../../d8/d45/group__feature2d__hal.html">Hardware Acceleration Layer</a></div></div>  </div>
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Classes</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d9/daa/structcvhalKeyPoint.html">cvhalKeyPoint</a></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
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Functions</h2></td></tr>
<tr class="memitem:ga22001bb1442bba599490c8f95179dcd1"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d47/group__features2d__hal__interface.html#ga22001bb1442bba599490c8f95179dcd1">hal_ni_FAST</a> (const <a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga65f85814a8290f9797005d3b28e7e5fc">uchar</a> *src_data, size_t src_step, int width, int height, <a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga65f85814a8290f9797005d3b28e7e5fc">uchar</a> *keypoints_data, size_t *keypoints_count, int threshold, bool nonmax_suppression, int type)</td></tr>
<tr class="memdesc:ga22001bb1442bba599490c8f95179dcd1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Detects corners using the FAST algorithm.  <a href="#ga22001bb1442bba599490c8f95179dcd1">More...</a><br /></td></tr>
<tr class="separator:ga22001bb1442bba599490c8f95179dcd1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga24f8a9ac4bbb4dabc501a74f26d19e0f"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d47/group__features2d__hal__interface.html#ga24f8a9ac4bbb4dabc501a74f26d19e0f">hal_ni_FAST_dense</a> (const <a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga65f85814a8290f9797005d3b28e7e5fc">uchar</a> *src_data, size_t src_step, <a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga65f85814a8290f9797005d3b28e7e5fc">uchar</a> *dst_data, size_t dst_step, int width, int height, <a class="el" href="../../df/d74/classcv_1_1FastFeatureDetector.html#a4654f6fb0aa4b8e9123b223bfa0e2a08">cv::FastFeatureDetector::DetectorType</a> type)</td></tr>
<tr class="memdesc:ga24f8a9ac4bbb4dabc501a74f26d19e0f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Detects corners using the FAST algorithm, returns mask.  <a href="#ga24f8a9ac4bbb4dabc501a74f26d19e0f">More...</a><br /></td></tr>
<tr class="separator:ga24f8a9ac4bbb4dabc501a74f26d19e0f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga071d81ac79a6eb73c0ed6b2794151134"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d47/group__features2d__hal__interface.html#ga071d81ac79a6eb73c0ed6b2794151134">hal_ni_FAST_NMS</a> (const <a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga65f85814a8290f9797005d3b28e7e5fc">uchar</a> *src_data, size_t src_step, <a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga65f85814a8290f9797005d3b28e7e5fc">uchar</a> *dst_data, size_t dst_step, int width, int height)</td></tr>
<tr class="memdesc:ga071d81ac79a6eb73c0ed6b2794151134"><td class="mdescLeft">&#160;</td><td class="mdescRight">Non-maximum suppression for FAST_9_16.  <a href="#ga071d81ac79a6eb73c0ed6b2794151134">More...</a><br /></td></tr>
<tr class="separator:ga071d81ac79a6eb73c0ed6b2794151134"><td class="memSeparator" colspan="2">&#160;</td></tr>
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Fast feature detector types</h2></td></tr>
<tr><td class="ititle" colspan="2"><p><a class="anchor" id="amgrp6a13ca7fd2791ca6e4e786c46749c15d"></a></p><dl class="section see"><dt>See also</dt><dd><a class="el" href="../../df/d74/classcv_1_1FastFeatureDetector.html" title="Wrapping class for feature detection using the FAST method. : ">cv::FastFeatureDetector</a> </dd></dl>
</td></tr>
<tr class="memitem:ga32cd56b9c82e0707b545746f736e1abe"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d47/group__features2d__hal__interface.html#ga32cd56b9c82e0707b545746f736e1abe">CV_HAL_TYPE_5_8</a>&#160;&#160;&#160;0</td></tr>
<tr class="separator:ga32cd56b9c82e0707b545746f736e1abe"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gae2cbe26be12b699f6971afa68464d927"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d47/group__features2d__hal__interface.html#gae2cbe26be12b699f6971afa68464d927">CV_HAL_TYPE_7_12</a>&#160;&#160;&#160;1</td></tr>
<tr class="separator:gae2cbe26be12b699f6971afa68464d927"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga5cb9f1132e5ef8d03f7fbb8ae69e8515"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d47/group__features2d__hal__interface.html#ga5cb9f1132e5ef8d03f7fbb8ae69e8515">CV_HAL_TYPE_9_16</a>&#160;&#160;&#160;2</td></tr>
<tr class="separator:ga5cb9f1132e5ef8d03f7fbb8ae69e8515"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<dl class="section note"><dt>Note</dt><dd>Define your functions to override default implementations: <div class="fragment"><div class="line"><span class="preprocessor">#undef hal_add8u</span></div><div class="line"><span class="preprocessor">#define hal_add8u my_add8u</span></div></div><!-- fragment --> </dd></dl>
<h2 class="groupheader">Macro Definition Documentation</h2>
<a id="ga32cd56b9c82e0707b545746f736e1abe"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga32cd56b9c82e0707b545746f736e1abe">&#9670;&nbsp;</a></span>CV_HAL_TYPE_5_8</h2>

<div class="memitem">
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          <td class="memname">#define CV_HAL_TYPE_5_8&#160;&#160;&#160;0</td>
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</div><div class="memdoc">

<p><code>#include &lt;<a class="el" href="../../d9/d0a/features2d_2include_2opencv2_2features2d_2hal_2interface_8h.html">opencv2/features2d/hal/interface.h</a>&gt;</code></p>

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</div>
<a id="gae2cbe26be12b699f6971afa68464d927"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gae2cbe26be12b699f6971afa68464d927">&#9670;&nbsp;</a></span>CV_HAL_TYPE_7_12</h2>

<div class="memitem">
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        <tr>
          <td class="memname">#define CV_HAL_TYPE_7_12&#160;&#160;&#160;1</td>
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      </table>
</div><div class="memdoc">

<p><code>#include &lt;<a class="el" href="../../d9/d0a/features2d_2include_2opencv2_2features2d_2hal_2interface_8h.html">opencv2/features2d/hal/interface.h</a>&gt;</code></p>

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<a id="ga5cb9f1132e5ef8d03f7fbb8ae69e8515"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga5cb9f1132e5ef8d03f7fbb8ae69e8515">&#9670;&nbsp;</a></span>CV_HAL_TYPE_9_16</h2>

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          <td class="memname">#define CV_HAL_TYPE_9_16&#160;&#160;&#160;2</td>
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</div><div class="memdoc">

<p><code>#include &lt;<a class="el" href="../../d9/d0a/features2d_2include_2opencv2_2features2d_2hal_2interface_8h.html">opencv2/features2d/hal/interface.h</a>&gt;</code></p>

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<h2 class="groupheader">Function Documentation</h2>
<a id="ga22001bb1442bba599490c8f95179dcd1"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga22001bb1442bba599490c8f95179dcd1">&#9670;&nbsp;</a></span>hal_ni_FAST()</h2>

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          <td class="memname">int hal_ni_FAST </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga65f85814a8290f9797005d3b28e7e5fc">uchar</a> *&#160;</td>
          <td class="paramname"><em>src_data</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">size_t&#160;</td>
          <td class="paramname"><em>src_step</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>width</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>height</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga65f85814a8290f9797005d3b28e7e5fc">uchar</a> *&#160;</td>
          <td class="paramname"><em>keypoints_data</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">size_t *&#160;</td>
          <td class="paramname"><em>keypoints_count</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>threshold</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">bool&#160;</td>
          <td class="paramname"><em>nonmax_suppression</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>type</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
  </td>
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<p><code>#include &lt;<a class="el" href="../../d2/dd9/features2d_2src_2hal__replacement_8hpp.html">features2d/src/hal_replacement.hpp</a>&gt;</code></p>

<p>Detects corners using the FAST algorithm. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">src_data,src_step</td><td>Source image </td></tr>
    <tr><td class="paramname">width,height</td><td>Source image dimensions </td></tr>
    <tr><td class="paramname">keypoints_data</td><td>Pointer to keypoints </td></tr>
    <tr><td class="paramname">keypoints_count</td><td>Count of keypoints </td></tr>
    <tr><td class="paramname">threshold</td><td>Threshold for keypoint </td></tr>
    <tr><td class="paramname">nonmax_suppression</td><td>Indicates if make nonmaxima suppression or not. </td></tr>
    <tr><td class="paramname">type</td><td>FAST type </td></tr>
  </table>
  </dd>
</dl>

</div>
</div>
<a id="ga24f8a9ac4bbb4dabc501a74f26d19e0f"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga24f8a9ac4bbb4dabc501a74f26d19e0f">&#9670;&nbsp;</a></span>hal_ni_FAST_dense()</h2>

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          <td class="memname">int hal_ni_FAST_dense </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga65f85814a8290f9797005d3b28e7e5fc">uchar</a> *&#160;</td>
          <td class="paramname"><em>src_data</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">size_t&#160;</td>
          <td class="paramname"><em>src_step</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga65f85814a8290f9797005d3b28e7e5fc">uchar</a> *&#160;</td>
          <td class="paramname"><em>dst_data</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">size_t&#160;</td>
          <td class="paramname"><em>dst_step</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>width</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>height</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="../../df/d74/classcv_1_1FastFeatureDetector.html#a4654f6fb0aa4b8e9123b223bfa0e2a08">cv::FastFeatureDetector::DetectorType</a>&#160;</td>
          <td class="paramname"><em>type</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
  </td>
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<p><code>#include &lt;<a class="el" href="../../d2/dd9/features2d_2src_2hal__replacement_8hpp.html">features2d/src/hal_replacement.hpp</a>&gt;</code></p>

<p>Detects corners using the FAST algorithm, returns mask. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">src_data,src_step</td><td>Source image </td></tr>
    <tr><td class="paramname">dst_data,dst_step</td><td>Destination mask </td></tr>
    <tr><td class="paramname">width,height</td><td>Source image dimensions </td></tr>
    <tr><td class="paramname">type</td><td>FAST type </td></tr>
  </table>
  </dd>
</dl>

</div>
</div>
<a id="ga071d81ac79a6eb73c0ed6b2794151134"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga071d81ac79a6eb73c0ed6b2794151134">&#9670;&nbsp;</a></span>hal_ni_FAST_NMS()</h2>

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          <td class="memname">int hal_ni_FAST_NMS </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga65f85814a8290f9797005d3b28e7e5fc">uchar</a> *&#160;</td>
          <td class="paramname"><em>src_data</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">size_t&#160;</td>
          <td class="paramname"><em>src_step</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga65f85814a8290f9797005d3b28e7e5fc">uchar</a> *&#160;</td>
          <td class="paramname"><em>dst_data</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">size_t&#160;</td>
          <td class="paramname"><em>dst_step</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>width</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>height</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
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<p><code>#include &lt;<a class="el" href="../../d2/dd9/features2d_2src_2hal__replacement_8hpp.html">features2d/src/hal_replacement.hpp</a>&gt;</code></p>

<p>Non-maximum suppression for FAST_9_16. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">src_data,src_step</td><td>Source mask </td></tr>
    <tr><td class="paramname">dst_data,dst_step</td><td>Destination mask after NMS </td></tr>
    <tr><td class="paramname">width,height</td><td>Source mask dimensions </td></tr>
  </table>
  </dd>
</dl>

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